CN105397417A - Rolling method of high-temperature alloy plate shaped forging - Google Patents
Rolling method of high-temperature alloy plate shaped forging Download PDFInfo
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- CN105397417A CN105397417A CN201510868973.1A CN201510868973A CN105397417A CN 105397417 A CN105397417 A CN 105397417A CN 201510868973 A CN201510868973 A CN 201510868973A CN 105397417 A CN105397417 A CN 105397417A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention discloses a rolling method of a high-temperature alloy plate shaped forging. The method comprises the following steps: performing substituting forging for a high-temperature alloy blank in a manner of upsetting at three times and drawing out at three times; then processing the high-temperature alloy blank subjected to the substituting forging by upsetting, punching a hole, expanding the hole through a mandrel supporter and rolling, so as to obtain a high-barrel thin-wall ring part, wherein the inside diameter of the ring part is 85 to 90% of the outside diameter; then performing linear cutting, namely, cutting the high-barrel thin-wall ring part into two semicircular ring parts; straightening through a forging hammer to obtain two plate shaped forgings. With the adoption of the method, the defects of the forging, such as non-uniform thickness, poor structure uniformity and a plurality of forging times, can be effectively avoided, thus the quality of the forging can be improved, and the production efficiency can be improved. The method is applied to the production of the high-temperature alloy plate shaped forging.
Description
Technical field
The present invention relates to a kind of milling method of plate shape Forging, particularly relate to a kind of milling method of high temperature alloy plate shape Forging.
Background technology
Panel-like member is a kind of conventional structural member, at present for the shaping of this forging, is typically employed in open die forging mode, is namely forged by flat-die hammer, makes it become plate shape.The maximum shortcoming of this method is that this forging thickness is less, in the process forged, temperature declines too fast, resistance of deformation increases very fast, the thickness that every hammering is beaten is not identical, causes the in uneven thickness of most soleplate shape Forging, and due to each position distortions amount inconsistent, make the structural homogenity of forging poor, time forging of the many fire of usual needs, increases the consumption of the energy, also extends the production cycle.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of milling method of high temperature alloy plate shape Forging, produce sheet material forging, by adopting looping mill rolling mode, forging is made high cylinder circular thin-wall forging, shear stretching one-tenth plate shape Forging again, efficiently avoid in uneven thickness, the defect such as structural homogenity is poor, forging times is many of forging, improve the quality of forging, improve production efficiency.
For solving the problems of the technologies described above, the milling method of high temperature alloy plate shape Forging of the present invention, its technical scheme comprises the following steps:
High temperature alloy bar by specification blanking is heated to 980 DEG C, is incubated by effective thickness × 8min/10mm; Three jumping-ups, pulling, round as a ball carrying out are adopted to change forging, air cooling after forging; Final forging temperature is more than or equal to 880 DEG C;
Reheating to 850 DEG C by changing the blank after forging, being incubated by effective thickness × 8min/10mm; Then carry out jumping-up, obtain solid cylinder; Carry out punching to solid cylinder again and obtain hollow cylinder, the internal diameter size of hollow cylinder is 30% ~ 40% of outside dimension;
Its internal diameter size is made to be 60% ~ 65% of outside dimension through saddle support reaming described hollow cylinder; And then upper looping mill, carry out finish to gauge and make its internal diameter size be 85% ~ 90% of outside dimension, make high cylinder thin-walled ring;
Adopt Linear cut to cut along the axis of high cylinder thin-walled ring, obtain two semicircle rings, then semicircle ring is heated to 250 DEG C ~ 350 DEG C, carries out stretching under forging hammer, obtain two plate shape Forgings.
The final forging temperature of described jumping-up, punching, saddle support reaming, looping mill rolling four steps all >=750 DEG C, as temperature < 750 DEG C, need to reheat to 850 DEG C, then carry out next step operation.
Described high temperature alloy is GH4169 alloy.
Compared with prior art, beneficial effect of the present invention is as follows:
The milling method of high temperature alloy plate shape Forging of the present invention, by adopting looping mill rolling mode, forging is made high cylinder circular thin-wall forging, shear stretching one-tenth plate shape Forging again, efficiently avoid in uneven thickness, the defect such as structural homogenity is poor, forging times is many of forging, improve the quality of forging, improve production efficiency.
This forging appearance and size is complete after testing.
This forging structural homogenity is better after testing.
The room temperature tensile properties of this forging after testing, its tensile strength is 1420MPa ~ 1430MPa (being greater than the 1275MPa of design instructions for use), yield strength when percentage elongation is 0.2% is 1280MPa ~ 1290MPa (being greater than the 1035MPa of design instructions for use), elongation after fracture was 18% ~ 25% (being greater than 12% of design instructions for use), and the contraction percentage of area was 33% ~ 36% (being greater than 15% of design instructions for use).
Above-mentioned testing result shows, adopts this forging property indices all to meet the requirements.
Detailed description of the invention
Implement the milling method of high temperature alloy plate shape Forging of the present invention, need to provide the equipment such as forge furnace, forcing press, looping mill, manipulator.With material trademark be below the high temperature alloy of GH4169 to illustrate embodiments of the present invention:
The chemical composition (percentage by weight) of this GH4169 alloy is: C content≤0.08%, containing Cr amount 17.0% ~ 21.0%, ni content 50.0% ~ 55.0%, containing Co amount≤1.0%, containing Mo amount 2.80% ~ 3.30%, containing Al amount 0.30% ~ 0.70%, containing Ti amount 0.75% ~ 1.15%, containing Nb amount 4.75% ~ 5.50%, containing B amount≤0.006%, containing Mg amount≤0.01%, containing Mn amount≤0.35%, si content≤0.35%, P content≤0.015%, containing S amount≤0.015%, containing Cu amount≤0.30%, containing Ca amount≤0.01%, containing Pb amount≤0.0005%, containing Se amount≤0.0003%, surplus is Fe.
The step of this method is as follows:
High temperature alloy bar by specification blanking is heated to 980 DEG C, is incubated by effective thickness × 8min/10mm; Three jumping-ups, pulling, round as a ball carrying out are adopted to change forging, air cooling after forging; Final forging temperature is more than or equal to 880 DEG C;
Reheating to 850 DEG C by changing the blank after forging, being incubated by effective thickness × 8min/10mm; Then carry out jumping-up, obtain solid cylinder; Carry out punching to solid cylinder again and obtain hollow cylinder, the internal diameter size of hollow cylinder is 30% ~ 40% of outside dimension;
Its internal diameter size is made to be 60% ~ 65% of outside dimension through saddle support reaming described hollow cylinder; And then upper looping mill, carry out finish to gauge and make its internal diameter size be 85% ~ 90% of outside dimension, make high cylinder thin-walled ring;
Adopt Linear cut to cut along the axis of high cylinder thin-walled ring, obtain two semicircle rings, then semicircle ring is heated to 250 DEG C ~ 350 DEG C, carries out stretching under forging hammer, obtain two plate shape Forgings.
The final forging temperature of described jumping-up, punching, saddle support reaming, looping mill rolling four steps all >=750 DEG C, as temperature < 750 DEG C, need to reheat to 850 DEG C, then carry out next step operation.
Claims (3)
1. a milling method for high temperature alloy plate shape Forging, is characterized in that, comprises the following steps:
High temperature alloy bar by specification blanking is heated to 980 DEG C, is incubated by effective thickness × 8min/10mm; Three jumping-ups, pulling, round as a ball carrying out are adopted to change forging, air cooling after forging; Final forging temperature is more than or equal to 880 DEG C;
Reheating to 850 DEG C by changing the blank after forging, being incubated by effective thickness × 8min/10mm; Then carry out jumping-up, obtain solid cylinder; Carry out punching to solid cylinder again and obtain hollow cylinder, the internal diameter size of hollow cylinder is 30% ~ 40% of outside dimension;
Its internal diameter size is made to be 60% ~ 65% of outside dimension through saddle support reaming described hollow cylinder; And then upper looping mill, carry out finish to gauge and make its internal diameter size be 85% ~ 90% of outside dimension, make high cylinder thin-walled ring;
Adopt Linear cut to cut along the axis of high cylinder thin-walled ring, obtain two semicircle rings, then semicircle ring is heated to 250 DEG C ~ 350 DEG C, carries out stretching under forging hammer, obtain two plate shape Forgings.
2. the milling method of high temperature alloy plate shape Forging according to claim 1, is characterized in that, described high temperature alloy is GH4169 alloy.
3. the milling method of high temperature alloy plate shape Forging according to claim 1 and 2, it is characterized in that, the final forging temperature of described jumping-up, punching, saddle support reaming, looping mill rolling four steps all >=750 DEG C, as temperature < 750 DEG C, need to reheat to 850 DEG C, then carry out next step operation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510868973.1A CN105397417A (en) | 2015-12-02 | 2015-12-02 | Rolling method of high-temperature alloy plate shaped forging |
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| CN201510868973.1A CN105397417A (en) | 2015-12-02 | 2015-12-02 | Rolling method of high-temperature alloy plate shaped forging |
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| CN105397417A true CN105397417A (en) | 2016-03-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345290A (en) * | 2017-07-07 | 2017-11-14 | 安徽同盛环件股份有限公司 | A kind of manufacture method of TC4 titanium alloy thin walls ring |
| CN108435821A (en) * | 2018-02-02 | 2018-08-24 | 国机金属江苏有限公司 | A kind of thin square plate forging method |
| CN111250639A (en) * | 2020-02-27 | 2020-06-09 | 无锡派克新材料科技股份有限公司 | Blank forming method for GH4169 large-sized special-shaped ring forging |
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| CN101758150A (en) * | 2009-11-27 | 2010-06-30 | 贵州安大航空锻造有限责任公司 | Rolling formation method of large and medium high-temperature alloy hollow disc-shaped forge piece |
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| KR20110129763A (en) * | 2010-05-26 | 2011-12-02 | 한국델파이주식회사 | A manufacturing method of a collar fan of an alternator using a steel pipe |
| CN103350329A (en) * | 2013-06-30 | 2013-10-16 | 贵州安大航空锻造有限责任公司 | Blank making method of large 4340 H steel special-shaped ring forging |
| CN104745988A (en) * | 2013-12-25 | 2015-07-01 | 核工业西南物理研究院 | Forging method of chromium/zirconium/copper special-shaped plate |
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2015
- 2015-12-02 CN CN201510868973.1A patent/CN105397417A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101381820A (en) * | 2007-09-05 | 2009-03-11 | 中国科学院金属研究所 | Method for preparing low nickel content binary TiNi and ternary TiNiHf shapre memory alloy sheet material |
| CN101758150A (en) * | 2009-11-27 | 2010-06-30 | 贵州安大航空锻造有限责任公司 | Rolling formation method of large and medium high-temperature alloy hollow disc-shaped forge piece |
| CN101823112A (en) * | 2010-05-20 | 2010-09-08 | 二重集团（德阳）重型装备股份有限公司 | Forging process of plate element |
| KR20110129763A (en) * | 2010-05-26 | 2011-12-02 | 한국델파이주식회사 | A manufacturing method of a collar fan of an alternator using a steel pipe |
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| CN104745988A (en) * | 2013-12-25 | 2015-07-01 | 核工业西南物理研究院 | Forging method of chromium/zirconium/copper special-shaped plate |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345290A (en) * | 2017-07-07 | 2017-11-14 | 安徽同盛环件股份有限公司 | A kind of manufacture method of TC4 titanium alloy thin walls ring |
| CN108435821A (en) * | 2018-02-02 | 2018-08-24 | 国机金属江苏有限公司 | A kind of thin square plate forging method |
| CN108435821B (en) * | 2018-02-02 | 2020-04-03 | 国机金属江苏有限公司 | Thin square plate forging method |
| CN111250639A (en) * | 2020-02-27 | 2020-06-09 | 无锡派克新材料科技股份有限公司 | Blank forming method for GH4169 large-sized special-shaped ring forging |
| CN111250639B (en) * | 2020-02-27 | 2021-12-21 | 无锡派克新材料科技股份有限公司 | Blank forming method for GH4169 large-sized special-shaped ring forging |
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Application publication date: 20160316 |